Open Plan Living rooms require a bit more thought. Depending on the size of the room, and the amount of windows and doors, you may require a system that comes with features such as a fast fan setting, low economy setting, and dehumidifying setting. All these functions’ are important in finding the right setting for your living space.
Another option for large spaces is the less attractive Portable Air Conditioning unit. You usually sit these near windows, and they require a lot more constant attention, as some need water, and others have hoses which must be placed outside the window. I do not advocate these types of air conditioners, and they should only be purchased as last resort options. They do work, and they work well, but they are much higher maintenance then the systems mentioned above.